Filter



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FILTER. No. 447,568. Patented Mar. 3, 1891.

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\VILLIAM M. JEIVELL AND OMAR H. JEVVELL, OF CHICAGO, ILLINOIS.

FILTER.

SFECIFICATION forming part of Letters Patent No. 447,568, dated March 3,1891.

I Application filed December 1, 1890. Serial No. 373,109. (No model.)

To alt whom it may concern:

.Be it known that we, WILLIAM M. J EWELL and OMAR H. J EWELL, citizensof the United States of America, residing at Chicago, in the county ofCook and State of Illinois,have invented certain new and usefulImprovements in Filters, of which the following is a specification,reference being had therein to the accompanying drawings.

This our invention relates to filters principally for private dwellinguse; and it has for its object to provide such a filter that can besecured anywhere against the wall of the kitchen or anyother room andconnected with the hydrant, and which in an easy manner can be readilycleaned of accumulated impurities; and with these objects in view ourinvention consists of the novel devices and combinations of deviceshereinafter described and specifically claimed.

In the accompanying drawings, Figure 1 represents a verticalcross-section of the entire apparatus; Fig. 2, a plan view of the same,and Fig. 3 a plan of the grate for the filtering material.

Corresponding letters of reference in-the several figures of thedrawings designate like parts.

A denotes a ring having arms with rectangular flanges a, by which saidring is secured with wood-screws against the wall. This ring A forms thesupport for the filter, and upon it is secured by screws the bottomflange of the cylindrical chamber B, provided with a somewhatfunnel-shaped bottom I) integral therewith, the central nozzle 0 ofwhich is internally screw-threaded. In its top the chamber B is expandedto provide a shoulder d, above which the expanded portion is internallyscrew-threaded, and upon this shoulder is placed the cover D, apacking-ring of sheetrubber being interposed for insuring a hermeticjoint, and this cover D is forced and held down to its seat by a ringEfexteriorly screw-threaded to engage the internal screwthreads ofchamber B, and is provided with radial handles 6, that extend from thetop thereof.

In the center of cover D is screwed a stuffing-box f, tapped for ascrew-stein F and fitted with a screw-nut gland g for forming a tightjoint around such screw-stem F. v This screw-stem F has secured to itsupper end a hand-wheel h.

Surrounding the bottom I) of chamber B is provided an annular recess fora rubber ring 2', upon which is seated the exterior ring of a grate G,provided with cross-bars j, that are narrowed toward their upper face,providing the support for the filtering material. This filteringmaterial consists of a perforated sheet of metal k, upon which areplaced sheets or layers of paper or other fibrous or porous material Z,and upon this filtering material is placed a somewhat bell-shaped cup H,the outer rim of which coincides with the ring of grate G, so theperipherical edges of the filtering material are packed between the saidring of grate G and the outer rim of cup H. This cup H to its center hasa projecting boss conically concaved for receiving the point ofscrew-stem F, by which it is forced downward to compress the edges ofthe filtering material.

Said cup H is perforated with holes m for ad-- 'mitting the water fedthroughapipe I, tapped through chamber 13 and provided with a valve 01..

J is the reservoir for the filtered water, being a cylindrical vesselclosed on top and bottom and having a central screw-neck to its top thatenters and is coupled with the nozzle 0 of chamber 13. To its bottomcenter the reservoirJ is provided with a. faucet p of any usualconstruction, through which water can be drawn in desired quantities.This reservoir J also has to its top, at oneside,acheck-valve q, soarranged that it will admit air, but will close against the escape ofairor water. The water admitted through pipe I into the chamber 13,after passing through perforations m in cup II, must filter through thefibrous or porous sheets [before it can escape through neck 0 intoreservoir J The atmospheric air contained in such reservoir willbecompressed by the water entering to a pressure equal to the pressure ofthe supply, after which no more filtering will take place until some ofthe water has been drawn from the reservoir through fa u cet p, when atonce a corresponding amount of water willbe filtered again, and withemptyin g the reservoir entirely, and thereby exhausting part of theair, an equal amount of air will be admitted through valve q. Thus itwill be seen the water in this filter will be under pressure for drawingsmall amounts equal to the pressure in the hydrant. From time to timethe filtering material must be cleaned of the accumulating impuritiesfrom the water settling thereon. This is readily accomplished by closingvalve 02, then partly unscrewing screw-stem 1", next by unscrewing andremoving ring E, and finally by re moving enp II, when the filteringmaterial can be taken out and washed or replaced by new material, andthen the parts can be connected again in the reversed order they wereremoved.

This apparatus, as will be readily seen, is very simple and convenientfor the purpose designed, and its great adt'antage consists in the easymanner of keeping it clean, and thereby insuring its perfect andsatisfactory operation.

\VILTAIAM M. JEVVEL I). ()IYI Alt ll. JE \VELL.

Witnesses:

'WILLIAM ll. Lo'rz, O'r'ro LUEBKERT.

